Add chart for the 4-day-forecast

[pilian]

The predictions of the app are very good, but unfortunately very difficult to oversee.
The 3 day forecast consists mainly of numbers.
The weekly chart is only very rough.

A chart with the 4 day forecast would be very helpful.
For example:
temperature as red line, hourly
rainfall as blue bar chart, tree-hour intervalls
wind force as grey line, hourly

Here is an example (with too much data):